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    <title>Document</title>
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        }

        body {
            background-color: #fff;
            height: 100vh;
            padding: 20px;
        }

        iframe {
            width: 80vw;
            height: 50vh;
            background-color: aqua;
        }
    </style>
</head>

<body>
    <ul>
        <li>
            <a target="asdf" href="https://www.qq.com/">qq</a>
        </li>
        <li>
            <a target="asdf" href="https://music.163.com/">网易</a>
        </li>
    </ul>
    <iframe name="asdf" src="index.html" frameborder="0"></iframe>
</body>

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